Originally Posted by Matthew_Armeni

Normal screws can get clogged with dirt, a hex is easier to clean off to remove. We did left and right threads because as the shock moves it tries to unthread the shock screws. If we didn't do the left hand threads on that side it would slowly unscrew.
Check your retaining nuts for the top of the shocks, I bet the side opposite the left handed bottom screw has to be re-tightened more often than the other.